What fertilizer is lacking when leaves turn yellow?

Fertilizer is very important in plant growth. Once lacking, the old leaves of the plant will start to turn yellow, and then the whole plant will turn yellow from bottom to top. It is necessary to replenish fertilizers in time and apply urea, ammonium nitrate and bean dregs to plants to make their leaves turn green.

Yellow leaves may also be iron deficiency. Young leaves and old leaves turn yellow at the same time. The mesophyll of young leaves turns yellow and the veins are green, forming a yellow leaf net. Generally, ferrous sulfate is poured, but the concentration should not be too high, and it can be applied in stages to avoid burning roots.

For plants, calcium is also extremely important for their growth. You know, if plants lack calcium, it will cause young leaves to curl and yellow. When this happens to the plants being maintained, it is necessary to supplement calcium in time. You can crush the eggshell and put it in a flowerpot.

Too much watering or water accumulation can also lead to yellowing of young leaves of plants, so it is necessary to adjust soil moisture. Too much fertilization or too short interval will cause fertilizer damage, and the young leaves will be uneven, but the leaves are thick and shiny, so the intertillage should control fertilizer, water and soil.